Notes: HABITAT: growing on well-composted Douglas-fir needles and Bigleaf maple leaves which had been shredded and dumped in mass; STIPE: Bulbous at base (but often growing together in large clumps of 10-15); off-white in youth becoming dark yellowish-brown in age; fibrous; solid, narrowing somewhat between the base and the cap, but flaring near the cap to support a very large (in my experience, this is large) mushroom. CAP: very light gray with white dusting on top; umbillicate to planar, 4-9 inches broad with thick flesh. GILLS: white, decurrent. No spore print 2 hours after picking.